作者
Kanapathippillai Cumanan, George C Alexandropoulos, Zhiguo Ding, George K Karagiannidis
发表日期
2017/8
期刊
IEEE Transactions on Vehicular Technology
卷号
66
期号
8
页码范围
7495-7505
出版商
IEEE
简介
This paper studies the secrecy rate maximization problem of a secure wireless communication system in the presence of multiple eavesdroppers. The security of the communication link is enhanced through cooperative jamming with the help of multiple jammers. First, a feasibility condition is derived to achieve a positive secrecy rate at the destination. Then, we solve the original secrecy rate maximization problem, which is not convex in terms of power allocation at the jammers. To circumvent this nonconvexity, the achievable secrecy rate is approximated for a given power allocation at the jammers, and the approximated problem is formulated into a geometric programming one. Based on this approximation, an iterative algorithm has been developed to obtain the optimal power allocation at the jammers. Next, we provide a bisection approach, based on 1-D search, to validate the optimality of the proposed algorithm …
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Secure communications with cooperative jamming: Optimal power allocation and secrecy outage analysis
K Cumanan, GC Alexandropoulos, Z Ding… - IEEE Transactions on Vehicular Technology, 2017